Jökull


Jökull - 01.12.2006, Page 2

Jökull - 01.12.2006, Page 2
JÖKULL 56. ár / No. 56, 2006 Útgefendur / Published by: JÖKLARANNSÓKNAFÉLAG ÍSLANDS / ICELAND GLACIOLOGICAL SOCIETY og / and JARÐFRÆÐAFÉLAG ÍSLANDS / GEOSCIENCE SOCIETY OF ICELAND Ritstjórar / Editors: Áslaug Geirsdóttir, age@hi.is Jarð- og landfræðiskor Háskóla Íslands / Dept. of Geosciences, University of Iceland, Öskju, Sturlugötu 7, IS-101 Reykjavík, Iceland Bryndís Brandsdóttir, bryndis@raunvis.hi.is Jarðvísindastofnun Háskólans / Institute of Earth Sciences, University of Iceland, Öskju, Sturlugötu 7, IS-101 Reykjavík, Iceland Snævarr Guðmundsson, snaevarr@mmedia.is Lindarbergi 46, 221 Hafnarfjörður Ritnefnd / Editorial Board: Christopher J. Caseldine, C.J.Caseldine@exeter.ac.uk, School of Geography and Archaeology, Univ. of Exeter, UK Fiona S. Tweed, f.s.tweed@staffs.ac.uk, Division of Geography, Staffordshire University, UK Gifford H. Miller, gmiller@colorado.edu, INSTAAR, University of Colorado at Boulder, USA Haraldur Sigurdsson, haraldur@gsosun1.gso.uri.edu, Department of Oceanography, University of Rhode Island, USA Helgi Björnsson, hb@raunvis.hi.is, Jarðvísindastofnun Háskólans / Institute of Earth Sciences, University of Iceland Karen Luise Knudsen, karenluise.knudsen@geo.au.dk, Department of Earth Sciences, University of Aarhus, Denmark Karl Grönvold, karlgr@hi.is, Norræna Eldfjallasetrinu / Nordic Volcanol. Center, Institute of Earth Sciences, Reykjavík Kristján Sæmundsson, ks@isor.is, Íslenskar Orkurannsóknir / Iceland GeoSurvey, Reykjavík Leó Kristjánsson, leo@raunvis.hi.is, Jarðvísindastofnun Háskólans / Institute of Earth Sciences, University of Iceland Robert S. Detrick, rdetrick@whoi.edu, Woods Hole Oceanographic Institution, USA Tómas Jóhannesson, tj@vedur.is, Veðurstofu Íslands / The Icelandic Meteorological Office, Reykjavík William H. Menke, menke@ldeo.columbia.edu, Lamont-Doherty Earth Observatory of Columbia University, USA Dreifing / Distribution: Pósthólf 5128 / P.O. Box 5128, IS-125 Reykjavík Uppsetning / Layout: Bryndís Brandsdóttir and Gerlinde Xander. Prentun / Printed by: Prentsmiðjan Oddi hf. desember / December 2006 Forsíðumynd / Cover figure: Norðvestur brattan fjallasal Svöludals streymir fjallsrótarjökull sem rífur með sér mylsnu úr fjallshlíðunum svo að ótal smáar randir ná alla leið niður að jaðri. Þvert á randirnar eru svigður sem sýna hvernig hraði jökulsins er mestur um miðbik og minnkar nær jöðrunum; þar skiptast á dökk sumarlög og ljós vetrarlög. Jökullinn hefur ýtt upp Veðurárdalsrönd en nú hopað inn fyrir hana. Vestar fellur dökkur, svigðulaus og hraðskreiður austurstraumur Breiðamerkurjökuls suður með Veðurárdalsfjöllum þar sem hníf- skarpar brúnir vitna um rofmátt jökla. (Texti: Helgi Björnsson). – A unique pattern of medial moraines and ogives on the Svöludalur piedmont glacier in contrast to the fast flowing eastern branch of Breiðamerkurjökull. Ljósm./Photo. Snævarr Guðmundsson.
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Jökull

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